Electric insulator



Sept. 20, 1932. w; D. KYLE 1,877,903

ELECTRIC INSULATOR Filed Sept. 50, 1929 Patented Sept. 20, 1932 UNITED STATES PATIENT OFFICE.

rm, OF SOUTH MILWAUKEE, WISCONSIN, A CORPORATION OF DELAWARE ELECTRIC msuLAToB.

Application filed September so, 1929. Serial no. 396,247.

' This invention relates to electric insulators and it is one of the objects of the present invention to provide an insulator having a terminal member formed therein. While the invention is of general application it is particularly applicable to insulators for dead ending insulated drop wires. i

In electric wiring work it is customary for the wiring contractor .to furnish th'e wire connections from the side of the building into the house. The power company extends a connection to the house from the pole carrying the power lines and at the same time it establishes a connection to the conductors located by the contractor on the side of the building and extending into the house. The incoming power wire is extended through an eye or perforation in an insulator or is wound around a groove in the insulator and the span i is drawn tight. The end of the wire is bent back and twisted about the main part of the span wire to hold the same tight against the head of the insulator. A connection is then made between the span conductor and the sity of soldering the connection. While the insulator of the present invention is particularly useful for dead ending a line wire it is also capable of other uses and I do not wish to be limited to any particular use to which my insulator may be put.

In the embodiment of the invention which has been herein illustrated,I provide a unitary insulator having a body portion of frangible insulation. The insulator has an eye formed therein for receiving a line wire or it may have a peripheral groove around which the wire may be wound. The insulator has a terminal member, which may be of any preferred construction, embedded therein for establishing the desired connections. This construction not only obviates the necessity for soldering the connection but also, since the terminal is rigidly fixed, it does not require taping to guard against the swinging of the connection into contact with the building or other grounded or live parts.

Another advantage of my invention is that it permits the power company to disconnect the line to the consumer outside of the building in a very efiicient and simple manner. I

H The attainment of the above and further objects of the present invention will be apparent from the following specification taken in conjunction with the accompanying drawin forming a part thereof. In the drawing:

he single figure is a side View of an insulator and terminal constructed in accordance with my invention, said view showing the manner in which the insulator is adapted to be mounted. 1

Referring now more'particularly to the figure, the insulator comprises a body portion 1 of suitable insulating material such as porcelain or the like, having a transverse line wire receiving opening 2 therein. The insulator also has an end groove 3, for receiving the end of a line or wire. The groove 3, extends across the top or outer end of the insulator and is rounded and relatively shallow with itswell rounded edges merging into the well rounded edges of the opening 2. The insulator is likewise provided with a groove 4, formed therein for purposes well known in the art." A wood screw 5, of the self piercing type, is cemented into the base of the insulator and provides the means for mounting the insulator upon a wood support. The screw 5,which is made of metal, is adapted to be screwed into a wood support without previously drilling a hole therein. The shank portion of the screw is embedded in the body of the insulator and terminates at a distance from the opening 2. The screw may be embedded in the insulator during the process of molding the body thereof, as is well understood by those skilled inthe art. When the insulator is made of porcelain the screw 5 is embeddedein a hole formed in theibody of vthe insulator being held thereinby a suitable porcelain cement, or by a lead filler. This is more clearly shown in my pending applica- WILLIAM D. KYLE, 0F MILWAUKEE, WISCONSIN, ASSIGNOR TO IlINE MATERIAL COM- 1 tion, Serial No. 376,202 filed July 5, 1929 to which reference may be had for a further description of the manner of embedding the screw within the insulator.

The insulator is provided in addition with a pair of projecting portions 37 and 37 which are formedintegrally with the body of the insulator for protecting the terminal, said projecting portions being of the same mate= ria as d on t t g. pa t Qt he. in-

ing material is embedded in the insulation and is provided with two holes 39 for receiv ing the bared ends of the conductors to be connected and in addition is provided with a" pair ofset screws 39 for maintaini-n the ends oi the conductors in .place wandrinrm electrio contact with the terminal. ,The projectionsii'land 37 protect the terminal connectionsin that they tend to reduce the probability of accidentally touching the contactsince they lie adjacent to a goodly portion ofv the 'contactt erminal. It is understood that any other preferred form of terminal may be used in connection with the insulatorshown.

)Yhen used for dead ending a dro wire the in ulator is mounted upon the .si e of. the house means of the screw 5, and theline wire is extended to the insulator withabout a foot of lineextending beyond the insulator. 'The end of the wire is. thenpassed through the eye or perforation 2,, and the span is drawntight. The end of the wire is then bent back and twisted about the niain part of the span wire to hold the same tight against the insulator and then theend ofjthe wire is cleaned of its insulation and passed through one or the openings 39. The corresponding screw 39 is tightened against the wire therebyestablishing agood electrical connection between the end-of the wireand the temninal 38. I The end of the wirewhich extendsalong theside of the house is likewise. cleaned of insulation and is passed through theother opening 39and'secured in firm electrical contact withthe terminal 38 by means of the "other; screw 39'. This establishes a good electrical connection between the twocondnctors. This form of connection is. highly advantageous in that it eliminates the necessity o'fsoldering, Insulators of. the present building in a very simple and eflicient manner.

While I have herein shown and described a preferred embodiment of my invention it is to be understood that this invention is not limited to an specific construction herein shown, the samebeingmcrelydllustrative of the invention. What I consider new and desire to secure by Letters Patent is:

1 a A M! zw dflini mlnuflcture, a. combined sulator, A terminal 38 ofsuitablcconduct insulate! r nd' eml nal comprising a: llnitary body of frangible insulation having a prefmmedrurved confi uration including an eye for holding a conductor in place thereon, said cenfiguraticm being provided with well croun ededge t prevent inj ry E a luctor held thereomanda termina member having oneend extending into the insulator andbeing held in place thereby, said insufl ator 'inclu dingj integrally for med portions V l i in lying over ;and ,un(ler,the terminal for protecting the same. In witness whereof l, hereunto subscribe my nillllflthld2lil1 da of Se t. 1929.

LLIA D. KYLE,

type are/generally mountedin aposition such 

